/**
 * @author Xiaolong Li
 * @email 1392728166@qq.com
 * Description:
 * @date 2024/8/22 22:09
 */
public class Main {
    public static void main(String[] args) {
        String s = "Hello World!";
        String s = "2Hello World!";
        System.out.println("Hello world!");
    }
}